Biodiesel has attracted increasing interest and has proved to be a good substitute for fossil-based fuels due to its environmental advantages and availability from renewable resources such as refined and waste vegetable ...

Several studies have been carried out on the production of biodiesel using different heterogeneous catalysts
but this study has been able to demonstrate the prospect of utilizing South African class F fly ash
as a raw ...

Photocatalysis using titanium dioxide as photocatalyst is an efficient way for the removal of organic
contaminants in water using solar energy. In this study, thin
films of copper and silver were deposited on
fused ...

The hydroxyl radical (OH•) is a powerful oxidant produced as a consequence of cavitation in water. It can react nonspecifically in
breaking down persistent organic pollutants in water into their mineral form. It can also ...

Herein, we report the synthesis of quartz supported TiO2 photocatalysts codoped with carbon and silver through the hydrolysis of titanium tetrachloride followed by calcination at 500°C. The prepared samples were characterized ...

A D-optimal design was applied in the study of input factors: temperature, pressure, solid/liquid (S/L) ratio and particle size and
their influence on the carbonation of brine impacted fly ash (FA) determined. Both ...

South African fly ash has been shown to be a useful feedstock for the synthesis
of some zeolites. The present study focuses on the effect of impeller design and agitation
rates on the synthesis of zeolite Na-P1 which are ...

Persistent organic pollutants (POPs) are very tenacious wastewater contaminants. The consequences of their existence have been acknowledged for negatively affecting the ecosystem with specific impact upon endocrine disruption ...

South Africa is largely dependent on the combustion of coal for electricity production; Eskom’s coalfired
power stations consume approximately 109 million tons of coal per annum, producing around 25
million tons of ash, ...

Production of a high value zeolite from fly ash has been shown to be an avenue
for the utilization of South African fly ash which presently constitutes a huge disposal
problem. The synthesis of zeolites Na-P1 and analcime ...